A unique layout with a matrix of traces having at least traces in one direction provided with portions which are interleaved with portions of adjacent traces. Unlike the prior art zigzag pattern, the extensions of the traces of the present invention are actually interleaved, so that they overlap with...http://www.google.es/patents/US6147680?utm_source=gb-gplus-sharePatente US6147680 - Touchpad with interleaved traces
